On 08/10/2020 11:59, Faiz Abbas wrote:
Tero,
On 06/10/20 6:40 pm, Tero Kristo wrote:
On 06/10/2020 16:03, Faiz Abbas wrote:
Hi Tero,
On 06/10/20 5:21 pm, Tero Kristo wrote:
On 02/10/2020 19:45, Faiz Abbas wrote:
The following patches enable configs in the arm64 defconfig to support
GPIO and I2C support on TI's J721e platform.
Faiz Abbas (2):
arm64: defconfig: Enable OMAP I2C driver
arm64: defconfig: Enable DAVINCI_GPIO driver
arch/arm64/configs/defconfig | 2 ++
1 file changed, 2 insertions(+)
Why are you enabling these?
Are they required for booting the board?
If not, they shall not be enabled, as it just clutters the arm64 defconfig
unnecessarily.
They are required because the SD card regulators need gpio over i2c expander
and also
soc gpio support to come up in UHS modes.
Is that needed for boot support? If it is only needed with UHS cards, that does
not seem important enough for me. We can already boot the board via other means.
Without these configs, the regulator drivers keep EPROBE_DEFERing waiting for
their gpio drivers
to probe and SD card never comes up. This configuration happens before any UHS
capabilities are detected.
[ 1.326654] sdhci-am654 4fb0000.sdhci: _devm_regulator_get id:vmmc ret:-517
[ 1.333651] sdhci-am654 4fb0000.sdhci: _devm_regulator_get id:vqmmc ret:-517
[ 1.340693] sdhci-am654 4fb0000.sdhci: sdhci_am654_probe ret:-517
[ 1.489088] sdhci-am654 4fb0000.sdhci: _devm_regulator_get id:vmmc ret:-517
[ 1.496067] sdhci-am654 4fb0000.sdhci: _devm_regulator_get id:vqmmc ret:-517
[ 1.510392] sdhci-am654 4fb0000.sdhci: sdhci_am654_probe ret:-517
[ 1.543210] sdhci-am654 4fb0000.sdhci: _devm_regulator_get id:vmmc ret:-517
[ 1.550186] sdhci-am654 4fb0000.sdhci: _devm_regulator_get id:vqmmc ret:-517
[ 1.568134] sdhci-am654 4fb0000.sdhci: sdhci_am654_probe ret:-517
This happens because you have merged/enabled UHS support or? This sounds
like a regression as I haven't seen this happen before.
-Tero
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